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BigTreeTech TSC2007 touchscreen ghost touches patch update for edge (6.12)

This commit is contained in:
JohnTheCoolingFan 2025-01-25 14:05:49 +03:00 committed by JohnTheCoolingFan
parent d92d484e3f
commit 3be9761a86
1 changed files with 128 additions and 77 deletions
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205
patch/kernel/archive/sunxi-6.12/patches.armbian/Fix-ghost-touches-on-tsc2007-tft-screen.patch
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@ -1,21 +1,23 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: John Doe <john.doe@somewhere.on.planet>
Date: Sun, 15 Dec 2024 13:59:13 +0000
From: JohnTheCoolingFan <ivan8215145640@gmail.com>
Date: Sat, 25 Jan 2025 12:54:16 +0000
Subject: Fix ghost touches on tsc2007 tft screen
Signed-off-by: John Doe <john.doe@somewhere.on.planet>
Signed-off-by: JohnTheCoolingFan <ivan8215145640@gmail.com>
---
arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-cb1.dtsi | 1 +
drivers/input/touchscreen/tsc2007.h | 1 +
drivers/input/touchscreen/tsc2007_core.c | 111 +++++-----
include/linux/platform_data/tsc2007.h | 1 +
4 files changed, 60 insertions(+), 54 deletions(-)
arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-cb1.dtsi | 1 +
drivers/input/touchscreen/tsc2007.h | 1 +
drivers/input/touchscreen/tsc2007_core.c | 96 +++++-----
include/linux/platform_data/tsc2007.h | 1 +
4 files changed, 49 insertions(+), 50 deletions(-)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-cb1.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-cb1.dtsi
index 111111111111..222222222222 100644
index 2022990e4..3b3a196ea 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-cb1.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-bigtreetech-cb1.dtsi
@@ -125,6 +125,7 @@ tft_tp: ns2009@48 {
@@ -123,10 +123,11 @@ i2c_gpio: i2c-gpio {
tft_tp: ns2009@48 {
compatible = "ti,tsc2007";
reg = <0x48>;
status = "disabled";
ti,x-plate-ohms = <660>;
@ -23,11 +25,15 @@ index 111111111111..222222222222 100644
ti,rt-thr = <3000>;
ti,fuzzx = <32>;
ti,fuzzy = <16>;
i2c,ignore-nak = <1>;
};
diff --git a/drivers/input/touchscreen/tsc2007.h b/drivers/input/touchscreen/tsc2007.h
index 111111111111..222222222222 100644
index 5252b6c6d..7411b8bce 100644
--- a/drivers/input/touchscreen/tsc2007.h
+++ b/drivers/input/touchscreen/tsc2007.h
@@ -65,6 +65,7 @@ struct tsc2007 {
@@ -63,10 +63,11 @@ struct tsc2007 {
struct i2c_client *client;
u16 model;
u16 x_plate_ohms;
@ -35,11 +41,15 @@ index 111111111111..222222222222 100644
u16 max_rt;
u16 rt_thr;
u8 touched;
unsigned long poll_period; /* in jiffies */
int fuzzx;
diff --git a/drivers/input/touchscreen/tsc2007_core.c b/drivers/input/touchscreen/tsc2007_core.c
index 111111111111..222222222222 100644
index 08bbbafbb..1ae1b1a3e 100644
--- a/drivers/input/touchscreen/tsc2007_core.c
+++ b/drivers/input/touchscreen/tsc2007_core.c
@@ -70,22 +70,25 @@ static void tsc2007_read_values(struct tsc2007 *tsc, struct ts_event *tc)
@@ -68,26 +68,24 @@ static void tsc2007_read_values(struct tsc2007 *tsc, struct ts_event *tc)
tsc2007_xfer(tsc, PWRDOWN);
}
u32 tsc2007_calculate_resistance(struct tsc2007 *tsc, struct ts_event *tc)
{
@ -47,8 +57,10 @@ index 111111111111..222222222222 100644
-
- /* range filtering */
- if (tc->x == MAX_12BIT)
- tc->x = 0;
-
+ if (tc->x == MAX_12BIT){
tc->x = 0;
+ }
- if (likely(tc->x && tc->z1)) {
- /* compute touch resistance using equation #1 */
- rt = tc->z2 - tc->z1;
@ -56,31 +68,25 @@ index 111111111111..222222222222 100644
- rt *= tsc->x_plate_ohms;
- rt /= tc->z1;
- rt = (rt + 2047) >> 12;
- }
+ u32 rt = 0;
+ if (tc->x == MAX_12BIT){
+ /* dev_info(&tsc->client->dev, "[DEBUG TSC] RESISTANCE CALCULATED | TC->X is MAX_12BIT Force to 0 || TC Z1: (%4d) | TC Z2: (%4d) | TC X: (%4d) | TC Y: (%4d)", tc->z1, tc->z2, tc->x, tc->y);*/
+ tc->x = 0;
+ }
+
+ if (tc->y == MAX_12BIT){
+ /*dev_info(&tsc->client->dev, "[DEBUG TSC] RESISTANCE CALCULATED | TC->Y is MAX_12BIT Force to 0 || TC Z1: (%4d) | TC Z2: (%4d) | TC X: (%4d) | TC Y: (%4d)", tc->z1, tc->z2, tc->x, tc->y);*/
+ tc->y = 0;
+ }
+
+
+ if (likely(tc->x && tc->y && tc->z1)) {
+ return (tsc->x_plate_ohms * tc->x / 4096) * ((4096 / tc->z1) - 1) - tsc->y_plate_ohms * (1 - tc->y / 4096);
+ }else{
+ /*dev_info(&tsc->client->dev, "[DEBUG TSC] RESISTANCE CALCULATED | Missing mandatory Data TCX(%4d) | TCY(%4d) | TCZ1(%4d)",tc->x,tc->y,tc->z1);*/
+ return false;
+ }
+ if (tc->y == MAX_12BIT){
+ tc->y = 0;
}
- return rt;
+
+ if (likely(tc->x && tc->y && tc->z1)) {
+ return (tsc->x_plate_ohms * tc->x / 4096) * ((4096 / tc->z1) - 1) - tsc->y_plate_ohms * (1 - tc->y / 4096);
+ } else{
+ return 0;
+ }
}
bool tsc2007_is_pen_down(struct tsc2007 *ts)
@@ -180,6 +183,7 @@ static irqreturn_t tsc2007_soft_poll(int irq, void *handle)
{
/*
@@ -178,58 +176,45 @@ static irqreturn_t tsc2007_soft_poll(int irq, void *handle)
{
struct tsc2007 *ts = handle;
struct input_dev *input = ts->input;
struct ts_event tc;
u32 rt;
@ -88,7 +94,9 @@ index 111111111111..222222222222 100644
if(!ts->stopped) {
@@ -189,47 +193,39 @@ static irqreturn_t tsc2007_soft_poll(int irq, void *handle)
mutex_lock(&ts->mlock);
tsc2007_read_values(ts, &tc);
mutex_unlock(&ts->mlock);
rt = tsc2007_calculate_resistance(ts, &tc);
@ -110,12 +118,21 @@ index 111111111111..222222222222 100644
- tc.x, tc.y, rt);
-
- rt = ts->max_rt - rt;
-
+ if (likely(rt)) {
- input_report_key(input, BTN_TOUCH, 1);
- input_report_abs(input, ABS_X, tc.y);
- input_report_abs(input, ABS_Y, 4096 - tc.x);
- input_report_abs(input, ABS_PRESSURE, rt);
-
+ /* range >= 0 && <= 4096 */
+ if (rt > 0 && rt <= ts->max_rt) {
+ rt = ts->max_rt - rt;
+ input_report_key(input, BTN_TOUCH, 1);
+ input_report_abs(input, ABS_X, tc.y);
+ input_report_abs(input, ABS_Y, 4096 - tc.x);
+ input_report_abs(input, ABS_PRESSURE, rt);
+ input_sync(input);
- input_sync(input);
- ts->touched = 1;
-
@ -127,47 +144,29 @@ index 111111111111..222222222222 100644
- input_report_abs(input, ABS_PRESSURE, 0);
- input_sync(input);
- ts->touched = 0;
- }
- }
+ } else {
+ //Discard Input Ghost or inconsistent
+ skipSync= true;
}
+ }else{
+ // No touch event or missing data for rt calculation
+ skipSync= true;
}
+ }
-
-
+ if (likely(rt)) {
+
+ /* range >= 0 && <= 4096 */
+ if (rt > 0 && rt <= ts->max_rt) {
+ rt = ts->max_rt - rt;
+ input_report_key(input, BTN_TOUCH, 1);
+ input_report_abs(input, ABS_X, tc.y);
+ input_report_abs(input, ABS_Y, 4096 - tc.x);
+ input_report_abs(input, ABS_PRESSURE, rt);
+ input_sync(input);
+ /*dev_info(&ts->client->dev, "[DEBUG TSC] TOUCH TRIGGERED | RT: (%4d) | TC Z1: (%4d) | TC Z2: (%4d) | TC X: (%4d) | TC Y: (%4d)", rt, tc.z1, tc.z2, tc.x, tc.y);*/
+
+ } else {
+ //Discard Input Ghost or inconsistent
+ /*dev_info(&ts->client->dev, "[DEBUG TSC] TOUCH DISCARD | RT: (%4d) | TC Z1: (%4d) | TC Z2: (%4d) | TC X: (%4d) | TC Y: (%4d)", rt, tc.z1, tc.z2, tc.x, tc.y);*/
+ skipSync= true;
+ }
+ }else{
+ // No touch event or missing data for rt calculation
+ skipSync= true;
+ }
+
+ }else{
+ // TFT Not initialized
+ /* dev_info(&ts->client->dev, "DEBUG TSC: TouchScreen Stopped"); */
+ if(skipSync){
+ input_report_key(input, BTN_TOUCH, 0);
+ input_report_abs(input, ABS_PRESSURE, 0);
+ input_sync(input);
}
+ if(skipSync){
+ input_report_key(input, BTN_TOUCH, 0);
+ input_report_abs(input, ABS_PRESSURE, 0);
+ input_sync(input);
+ }
+
return IRQ_HANDLED;
}
@@ -329,6 +325,13 @@ static int tsc2007_probe_properties(struct device *dev, struct tsc2007 *ts)
@@ -327,10 +312,17 @@ static int tsc2007_probe_properties(struct device *dev, struct tsc2007 *ts)
} else {
dev_err(dev, "Missing ti,x-plate-ohms device property\n");
return -EINVAL;
}
@ -181,11 +180,61 @@ index 111111111111..222222222222 100644
ts->gpiod = devm_gpiod_get_optional(dev, NULL, GPIOD_IN);
if (IS_ERR(ts->gpiod))
return PTR_ERR(ts->gpiod);
if (ts->gpiod)
@@ -345,10 +337,11 @@ static int tsc2007_probe_pdev(struct device *dev, struct tsc2007 *ts,
const struct tsc2007_platform_data *pdata,
const struct i2c_device_id *id)
{
ts->model = pdata->model;
ts->x_plate_ohms = pdata->x_plate_ohms;
+ ts->y_plate_ohms = pdata->y_plate_ohms;
ts->max_rt = pdata->max_rt ? : MAX_12BIT;
ts->poll_period = msecs_to_jiffies(pdata->poll_period ? : 1);
ts->get_pendown_state = pdata->get_pendown_state;
ts->clear_penirq = pdata->clear_penirq;
ts->fuzzx = pdata->fuzzx;
@@ -358,10 +351,15 @@ static int tsc2007_probe_pdev(struct device *dev, struct tsc2007 *ts,
if (pdata->x_plate_ohms == 0) {
dev_err(dev, "x_plate_ohms is not set up in platform data\n");
return -EINVAL;
}
+ if (pdata->y_plate_ohms == 0) {
+ dev_err(dev, "y_plate_ohms is not set up in platform data\n");
+ return -EINVAL;
+ }
+
return 0;
}
static void tsc2007_call_exit_platform_hw(void *data)
{
@@ -456,15 +454,13 @@ static int tsc2007_probe(struct i2c_client *client)
dev_err(&client->dev, "Failed to request irq %d: %d\n",
ts->irq, err);
return err;
}
} else {
- INIT_WORK(&ts->work_i2c_poll,
- tsc2007_ts_work_i2c_poll);
+ INIT_WORK(&ts->work_i2c_poll, tsc2007_ts_work_i2c_poll);
timer_setup(&ts->timer, tsc2007_ts_irq_poll_timer, 0);
- ts->timer.expires = jiffies +
- msecs_to_jiffies(POLL_INTERVAL_MS);
+ ts->timer.expires = jiffies + msecs_to_jiffies(POLL_INTERVAL_MS);
add_timer(&ts->timer);
}
tsc2007_stop(ts);
diff --git a/include/linux/platform_data/tsc2007.h b/include/linux/platform_data/tsc2007.h
index 111111111111..222222222222 100644
index a0ca52c41..f88e58032 100644
--- a/include/linux/platform_data/tsc2007.h
+++ b/include/linux/platform_data/tsc2007.h
@@ -7,6 +7,7 @@
@@ -5,10 +5,11 @@
/* linux/platform_data/tsc2007.h */
struct tsc2007_platform_data {
u16 model; /* 2007. */
u16 x_plate_ohms; /* must be non-zero value */
@ -193,6 +242,8 @@ index 111111111111..222222222222 100644
u16 max_rt; /* max. resistance above which samples are ignored */
unsigned long poll_period; /* time (in ms) between samples */
int fuzzx; /* fuzz factor for X, Y and pressure axes */
int fuzzy;
int fuzzz;
--
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